Full-Stack Engineer (Node.js / React)

Ukraine

The CHI Software team is not standing still. We love our job and give it one hundred percent of us! Every new project is a challenge that we face successfully. The only thing that can stop us is... Wait, it’s nothing! The number of projects is growing, and with them, our team too. And now we need a Full-Stack Engineer (Node.js / React).

About the project

We are an early-stage SaaS startup building a payment analytics platform for platforms and marketplaces. Our mission is to provide visibility into payment processing fees, enable smarter payment strategies, and simplify finance operations.

You will join a small, experienced founding team with strong fintech backgrounds and play a key role in scaling the MVP, supporting pilot clients, and shaping the core product architecture.

This is a high-impact product role for someone who enjoys building from the ground up in a fast-moving startup environment.

Responsibilities

Own backend system design, feature delivery, and performance optimization
Build scalable RESTful APIs that transform payment data into actionable insights
Design and implement data pipelines to ingest and normalize high-volume transactional data from multiple payment providers
Deliver full-stack features when needed (Node.js + Next.js/React)
Collaborate closely with founders to align technical development with business goals
Use AI-assisted development tools (e.g., GitHub Copilot, Cursor) to accelerate delivery
Maintain high standards in testing, documentation, and system security